OM6208 NXP Semiconductors, OM6208 Datasheet - Page 18

• Manufacturer Part Number: OM6208
• Description: Om6208 65 X 96 Pixels Matrix Grey-scale Lcd Driver
• Manufacturer: NXP Semiconductors

Philips Semiconductors
9.2.2
The read mode of the interface means that the
microcontroller reads data from the OM6208. To do so the
microcontroller first has to send a command, the read
status command, and then the following byte is transmitted
in the opposite direction using SDO (see Fig.19). After
that, SCE is required to go HIGH before a new command
is sent.
The OM6208 samples the SDATA data at rising SCLK
edges and shifts SDO data at falling SCLK edges. Thus
the SDO data is available for the microcontroller to read at
rising SCLK edges.
After the read status command has been sent, the SDATA
line must be set to 3-state not later then at the falling SCLK
edge of the last bit (see Fig.19).
Table 2 Read data format
Note
1. x = undefined.
Table 3 Read temperature sensor
Sending the instruction to read back the temperature sensor data will select the following status byte.
Note
1. x = undefined.
2003 feb 10
handbook, full pagewidth
D7 (MSB)
D7 (MSB)
65 x 96 pixels matrix grey-scale LCD driver
x
x
SDATA
(1)
(1)
SCLK
SDO
SCE
R
EAD MODE
D/C
TD[6]
D6
D6
B
DB7
DB6 DB5 DB4
TD[5]
D5
D5
B
Fig.19 Read mode serial interface 3-line.
DB3 DB2 DB1 DB0
TD[4]
D4
D4
B
18
The 8th read bit is shorter than the others because it is
terminated by the rising SCLK edge (see Fig.35). The last
rising SCLK edge sets SDO to 3-state after the delay
time t
9.2.3
Regardless of which serial interface is used there are five
bits that can be read (ID1 to ID4 and VM) and one
temperature register. For the bits, one bit is transmitted per
byte read and is selected by issuing the appropriate read
instruction from the instruction set. Bits ID1 and ID2 are
hard-wired so that ID1 always returns a logic 0 and ID2
always returns a logic 1. Bits ID3 and ID4 are the
identification bits and are set via ID3/SA0 and ID4/SA1
pads. The format for the read bit, B, is shown in Table 2.
DB7 DB6 DB5 DB4 DB3 DB2 DB1
TD[3]
D3
D3
B
4
.
R
EAD DATA FORMAT
TD[2]
D2
D2
B
TD[1]
DB0
D1
D1
B
Product specification
OM6208
MCE176
D0 (LSB)
D0 (LSB)
D/C
TD[0]
B